US218418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in hydrants
Assignee: —
•
Filing: —
•
Granted: 1879-08-12
•
Expires: 1896-08-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:32
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/005; B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5025; Y; Y10; Y10T; Y10T137/00; Y10T137/5327; Y10T137/5456; Y10T137/5474; Y10T137/5497; Y10T137/5503; Y10T137/5532; Y10T137/5538; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1882-08-11 | 1883-02-10 | 1883-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-08-11 | 1887-02-10 | 1887-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-08-11 | 1891-02-10 | 1891-08-12 | $7700.00 | Window Closed / Lapsed |